← Artificial Acceleration
OpenAI · GPT series
GPT-4.5
Released
27 Feb 2025
· 12 days after
GPT-4o (ChatGPT)
Intelligence
—
no index score yet
Price
not priced
no list price
Speed
—
not measured
Weights
Closed
US lab
OpenAI’s best score over time
9 Jul 2026
26 Oct 2026
← previous from OpenAI
GPT-4o (ChatGPT)
next from OpenAI →
o1-pro